There was a post onth e front page of Precentral the other day about Automatic Patch updating by WedOS internals. Check that out.

It was called Auto Update Patch Technology on 1/27

But the OP is not requesting that. AUPT will allow you to update webOS and then simply update your patches (without having to remove them).

It will not allow you to move to a new device and have patches installed on a previous device automatically load. There would need to be somewhere in the "cloud" that the patches associated with your profile are stored. May come some time, those webOSInternals guys and gals are geniuses!!